Airjacket
n. 救生衣
🗣️ 情景例句
For a beginner, you're pretty good.
做为一个初学者，你已经做得很好了。
What fun!
多有趣呵。
Historians have long been puzzled by dots, lines and symbols which have been engraved on walls, bones, and the ivory tusks of mammoths.
长期以来，历史学家一直对雕刻在墙壁上、骨头上、古代长毛象的象牙上的点、线和形形色色的符号感到困惑不解。